Home / 155,695.53-214,815.39-87,688.71

Finding the Fourth Proportional to 155,695.53, 214,815.39 and 87,688.71

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Solution

The fourth proportional to 155,695.53, 214,815.39 and 87,688.71 is: 120,985.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,695.53 : 214,815.39 = 87,688.71 : x
  2. Step 2: Convert to fraction form
    155,695.53/214,815.39 = 87,688.71/x
  3. Step 3: Cross multiply
    155,695.53x = 214,815.39 × 87,688.71
  4. Step 4: Simplify right side
    155,695.53x = 18,836,884,437.25
  5. Step 5: Solve for x
    x = 18,836,884,437.25/155,695.53
  6. Step 6: Final answer
    x = 120,985.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.